展开 ((1-e^{-3s}))/(s*(s^2+5s))

解答

展开

\frac{( 1 - e ^{- 3 s} )}{s \cdot ( s ^{2} + 5 s )}

\frac{1 - e ^{- 3 s}}{s ^{3} + 5 s ^{2}}

求解步骤

\frac{1 - e ^{- 3 s}}{s ( s ^{2} + 5 s )}

乘开

s (s^{2} + 5 s) : s^{3} + 5 s^{2}

= \frac{1 - e ^{- 3 s}}{s ^{3} + 5 s ^{2}}

\frac{d}{d y} ((x) (x^{2} + \frac{y ^{3}}{3} - y))

e x p an d x^{\frac{1}{3}} (1 - 2 x) d x

e x p an d \frac{( x e ^{x} )}{x ^{2}}

e x p an d a (3, - 1) b (3, 7)

e x p an d (1 + 2 e^{\frac{x}{y}}) d x + 2 e^{\frac{x}{y}} (1 - \frac{x}{y}) d y